2 * Copyright 2007, The Android Open Source Project
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26 #ifndef CachedHistory_H
27 #define CachedHistory_H
29 #include "CachedFrame.h"
31 #define NAVIGATION_VISIT_DEPTH 8 // the number of nodes last visited -- used to detect ping-ponging (number should be tuned)
37 // CachedHistory is maintained even if DOM is rebuilt by running script.
38 // It uses blind pointers for comparison in the previously visited nodes.
42 void addToVisited(const CachedNode* , CachedFrame::Direction );
43 bool checkVisited(const CachedNode* , CachedFrame::Direction ) const;
44 bool didFirstLayout() const { return mDidFirstLayout; }
45 bool directionChange() const { return mDirectionChange; }
46 int minWorkingHorizontal() const { return mMinWorkingHorizontal; }
47 int minWorkingVertical() const { return mMinWorkingVertical; }
48 int maxWorkingHorizontal() const { return mMaxWorkingHorizontal; }
49 int maxWorkingVertical() const { return mMaxWorkingVertical; }
50 const WebCore::IntRect& navBounds() const { return mNavBounds; }
51 const WebCore::IntRect& priorBounds() const { return mPriorBounds; }
52 void setDidFirstLayout(bool did) { mDidFirstLayout = did; }
53 void setMouseBounds(const WebCore::IntRect& loc) { mMouseBounds = loc; }
54 void setNavBounds(const WebCore::IntRect& loc) { mNavBounds = loc; }
55 void setWorking(CachedFrame::Direction , const CachedNode* focus,
56 const WebCore::IntRect& viewBounds);
59 void pinMaxMin(const WebCore::IntRect& viewBounds);
61 const CachedNode* mNode;
62 CachedFrame::Direction mDirection;
63 } mVisited[NAVIGATION_VISIT_DEPTH];
64 WebCore::IntRect mMouseBounds; // constricted bounds, if cursor ring is partially visible
65 WebCore::IntRect mNavBounds; // cursor ring bounds plus optional keystroke movement
66 WebCore::IntRect mPriorBounds; // prior chosen cursor ring (for reversing narrowing)
67 bool mDirectionChange;
68 bool mDidFirstLayout; // set true when page is newly laid out
69 CachedFrame::Direction mLastMove;
70 CachedFrame::Direction mPriorMove;
71 int mMinWorkingHorizontal;
72 int mMaxWorkingHorizontal;
73 int mMinWorkingVertical;
74 int mMaxWorkingVertical;
75 friend class CachedRoot;
80 CachedHistory* base() const;
81 const char* direction(CachedFrame::Direction d) const;
82 void print(CachedRoot* ) const;